Home / 245,647.52-339,000.18-138,221.36

Finding the Fourth Proportional to 245,647.52, 339,000.18 and 138,221.36

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Solution

The fourth proportional to 245,647.52, 339,000.18 and 138,221.36 is: 190,749.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,647.52 : 339,000.18 = 138,221.36 : x
  2. Step 2: Convert to fraction form
    245,647.52/339,000.18 = 138,221.36/x
  3. Step 3: Cross multiply
    245,647.52x = 339,000.18 × 138,221.36
  4. Step 4: Simplify right side
    245,647.52x = 46,857,065,919.84
  5. Step 5: Solve for x
    x = 46,857,065,919.84/245,647.52
  6. Step 6: Final answer
    x = 190,749.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.